When you forget to setup UEFI on a new server!
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Fear not. Just grab mbr2gpt.exe from the \windows\system32 folder on a windows 10 machine and drop it anywhere you want on the new server, then run:
mbr2gpt /convert /disk:X /allowfullos
and you will be ready to restart and set your bios to UEFI support and finishing booting to your new uefi partition!
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This worked for me w/ the following output, not sure if the 2nd to last line is something to worry about or not:

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@JasGot said in When you forget to setup UEFI on a new server!:
Fear not. Just grab mbr2gpt.exe from the \windows\system32 folder on a windows 10 machine and drop it anywhere you want on the new server, then run:
mbr2gpt /convert /disk:X /allowfullos
and you will be ready to restart and set your bios to UEFI support and finishing booting to your new uefi partition!
How did I never know about this tool?
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That's extremely helpful, first time hearing about this tool.
Thanks for sharing